Inner primary install
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Cruiser
Joined: Jun 2021
Posts: 120
Likes: 43
From: New Jersey
Inner primary install
They say no such thing as a stupid question so here goes! Bike is a 1976 FLH, Im changing trans sprocket, replace seals. The engine and transmission are bolted down, when I reinstall the inner primary do I have to loosen the transmission or can the inner primary be bolted back in place since nothing loosened when inner primary was removed. Thank you for any assistance.
Seasoned HDF Member
Joined: Jul 2014
Posts: 8,603
Likes: 3,374
From: Cental, MI
If same same primary ... it shouldn't be a problem..Hand fit, and ensure you Do Not force Anything.. certainly Not anywhere near the Ring at the alternator.. very easy to Break...then, yer Screwed!!
Seasoned HDF Member
Joined: Jul 2014
Posts: 8,603
Likes: 3,374
From: Cental, MI
PITA...but..
Club Member
Joined: Mar 2009
Posts: 66,125
Likes: 51,434
From: Niles Canyon Ca.
Find enough problems with the old iron I do a full go over on them when the inner comes off. Loosen the front & upper motor mount bolts, check torque on the rears, feeler gauge the front for any gap and shim if needed, same with the upper. Loosen the trans, install the inner with the 4 motor bolts then pull the trans in with 2 of the studs. Get under and check the trans mounts for any gaps and shim to correct. Torque it all down. Be surprised how often things are out, and it does knock down felt vibration. Lot of nagging oil leaks and seeping come from the halves and mating points working against each other even with good gaskets and sealer.
Last edited by TwiZted Biker; Apr 27, 2026 at 09:05 PM.
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